[NBLUG/talk] thought I'd ask here also - Anyone have any experience with LTSP?

Steve S. northbaygeek at gmail.com
Fri Jan 23 16:11:33 PST 2015


Just a sudden thought... might a NIC be mis-set to a slow speed, causing
all sorts of funky backups, mis-queueing, context-switching, etc...?

On Fri, Jan 23, 2015 at 4:00 PM, Jordan Erickson <
jerickson at logicalnetworking.net> wrote:

> Can you give us a bit more detail as to your network/server setup? You
> say you're running 24cpus and 128gigs. Might be a logical explanation to
> house NFS on its own server.. What's your network speed? Thin (or fat)
> client specs? Distro?
>
>
> Cheers,
> Jordan
>
>
> On 01/23/2015 03:52 PM, gandalf at sonic.net wrote:
> > It's actually a NFS to a separate server. I'm not sure why it was done
> > that way. To me this would probably further congest the network while
> > not being nearly as fast as a high performance direct disk interface.
> >
> > On 2015-01-23 15:00, Omar Eljumaily wrote:
> >> Not speaking from experience with LTSP server, but my guess would be
> >> that it is a disk io bottleneck.
> >>
> >>
> http://stackoverflow.com/questions/21617500/understanding-load-average-vs-cpu-usage
> >>
> >>
> >> I believe that web browsers cache on disk most of their content and
> >> media before rendering it.  That's a lot of users hitting a single
> >> disk drive or array.  Do you have a large RAID array?  SSD?
> >>
> >> Omar
> >>
> >> On 1/23/2015 2:19 PM, gandalf at sonic.net wrote:
> >>>
> >>> I'm seeing very high load averages with low CPU usage. The two main
> >>> culprits are chrome and firefox. I've got about a hundred users
> >>> sharing the LTSP server which has some rich resources (24cpus and
> >>> 128gigs).
> >>>
> >>>
> >>>
> >>>
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